Netscaler ADC vulnerabilities

19 vulnerabilities

Known vulnerabilities in Netscaler ADC, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

9.8CVE-2025-7775citrixnetscaler_application_delivery_controller+3KEV
EPSS score
20.28%
Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with IPv6 services or servicegroups bound with IPv6 servers (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with DBS IPv6 services or servicegroups bound with IPv6 DBS servers (OR) CR virtual server with type HDX
9.8CVE-2025-7776citrixnetscaler_application_delivery_controller+3
EPSS score
8.21%
Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) with PCoIP Profile bounded to it
9.3CVE-2025-5777citrixnetscaler_application_delivery_controller+3KEVRansomware
EPSS score
99.97%
Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
8.8CVE-2025-5349citrixnetscaler_application_delivery_controller+2
EPSS score
6.20%
Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway
9.8CVE-2025-6543citrixnetscaler_application_delivery_controller+3KEV
EPSS score
10.56%
Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
5.9CVE-2025-12101netscaleradc+1
EPSS score
26.25%
Cross-Site Scripting (XSS) in NetScaler ADC and NetScaler Gateway when the appliance is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
8.7CVE-2025-8424netscaleradc+1
EPSS score
3.34%
Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway when an attacker can get access to the appliance NSIP, Cluster Management IP or local GSLB Site IP or SNIP with Management Access
8.7CVE-2026-13474citrixnetscaler_application_delivery_controller+3
EPSS score
0.56%
Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler
9.8CVE-2026-19490citrixnetscaler_application_delivery_controller+3KEV
EPSS score
23.16%
Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.
8.8CVE-2026-19489netscaleradc+1
EPSS score
3.19%
Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.
7.7CVE-2026-4368netscaleradc+1
EPSS score
0.29%
Race Condition in NetScaler ADC and NetScaler Gateway when appliance is configured as Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server leading to User Session Mixup
7.5CVE-2026-10817citrixnetscaler_application_delivery_controller+3
EPSS score
0.56%
Insufficient input validation leading to memory overread in NetScaler ADC and NetScaler Gateway if the TCP TimeStamp is enabled in TCP Profile and is associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler
7.5CVE-2026-10816citrixnetscaler_application_delivery_controller+3
EPSS score
0.58%
Arbitrary File Read (Unauthenticated) in NetScaler ADC and NetScaler Gateway if the access to NSIP, Cluster Management IP or SNIP with management access is enabled
9.8CVE-2026-8655citrixnetscaler_application_delivery_controller+3
EPSS score
0.63%
Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursive resolver deployment
8.8CVE-2026-8451citrixnetscaler_application_delivery_controller+3
EPSS score
0.50%
Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP
9.8CVE-2026-8452citrixnetscaler_application_delivery_controller+3KEV
EPSS score
1.01%
Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server
9.5CVE-2026-107406netscaleradc+1
EPSS score
0.47%
Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC. NetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements:   * For the following versions: Applicable only when configured as a SAML IdP: * NetScaler ADC and NetScaler Gateway between 14.1-73.37 and 14.1-73.41, inclusive * NetScaler ADC 14.1-FIPS between 14.1-73.37 FIPS and 14.1-73.41 FIPS, inclusive * NetScaler ADC and NetScaler Gateway between 13.1-64.23 and 13.1-64.28, inclusive * NetScaler ADC 13.1-FIPS between 13.1-NDcPP 13.1-37.279 and 13.1- 37.282, inclusive   For the following versions: Applicable only when configured as a SAML SP or SAML IdP: * NetScaler ADC and NetScaler Gateway before 14.1-73.37  * NetScaler ADC 14.1-FIPS before 14.1-73.37 FIPS  * NetScaler ADC and NetScaler Gateway before 13.1-64.23 * NetScaler ADC 13.1-FIPS before13.1-NDcPP 13.1-37.279
9.8CVE-2026-3055citrixnetscaler_application_delivery_controller+3KEV
EPSS score
4.04%
Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread
8.7CVE-2026-88779citrixnetscaler_application_delivery_controller+3KEV
EPSS score
0.59%
Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.